Alfa Romeo 4C (2015) is 10 mm (0.39 inch) wider and 649 kg (1,431 lbs) lighter than Buick LaCrosse (2016).
Buick LaCrosse (2016) is 1013 mm (39.88 inch) longer, 320 mm (12.60 inch) higher and has 267 liters (9.43 ft3) bigger cargo space than Alfa Romeo 4C (2015).